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Micromodem

5 months ago 163
  • Description
  • Documents
  • BOM
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  • Members
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Description

AX.25 packet modem using ATMega328

Documents

Micromodem schematic

Micromodem PCB

BOM

ID Name Designator Footprint Quantity
1 10u C10,C1,C2,C7 CAP-D6.3XF2.5 4
2 1u C9 CAP-D6.3XF2.5 1
3 4.7uF C6 CAP-D6.3XF2.5 1
4 16MHz X1 OSC-TH_L10.0-W4.5-P5.00 1
5 HEADER_PWR_TTL PWR_TTL HDR-TH_3P-P2.54-V 1
6 HDR_SERIAL_I2C SERIAL_I2C HDR-5X1/2.54 1
7 AMS1117-3.3 U2 SOT-223-3_L6.5-W3.4-P2.30-LS7.0-BR 1
8 1k R2,R7,R10 AXIAL-0.4 3
9 10k R3,R11 AXIAL-0.4 2
10 100k R12,R13 AXIAL-0.4 2
11 8k2 R4 AXIAL-0.4 1
12 3k9 R5 AXIAL-0.4 1
13 2k2 R6 AXIAL-0.4 1
14 270 R8,R1 AXIAL-0.4 2
15 2N7000 Q1 TO-92-3_L4.9-W3.7-P1.27-L 1
16 RED 3mm TX LED-3MM/2.54 1
17 GREEN 3mm RX LED-3MM/2.54 1
18 HEADER_ISP ISP HDR-IDC-2.54-2X3P 1
19 ATMEGA328P-PU U1 DIP-28_L34.6-W7.3-P2.54-LS10.2-BL 1
20 HEADER_TRX TRX DIP-1X4P2.54 1
21 100nF C8,C5 CAP-TH_L6.5-W3.5-P5.00-D1.2 2
22 22pF C4,C3 CAP-TH_L6.5-W3.5-P5.00-D1.2 2
23 HDR_PWR PWR HDR-2X1/2.54 1
24 100K R9 RES-ADJ-TH_3P-L9.5-W9.5-P2.50-L_3386P 1

Attachments

None

Members

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Comments (1)

tekk Reply

This board is tested and works.
micromodem.jpg

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